Incompatibilities with Legacy Versions & Configs

AllStarLink v3 has certain incompatible changes with older versions of the AllStarLink system.

Voter/RTCM Default Port

Modern installations of Asterisk runs as the unprivileged asterisk user rather than as root. Standard Linux convention prohibits non-root users to listen on a TCP port below 1024. The default port for Voters/RTCMs has been changed to 1667 when previously it was 667.

If the Voter/RTCM port cannot be easily changed, then the following configuration can be made to the underlying operating system:

echo net.ipv4.ip_unprivileged_port_start=667 > /etc/sysctl.d/aslport667.conf
sysctl -p
systemctl restart asterisk

If running the AllStarLink Pi Appliance (or another system with a firewall), inbound to port 667/UDP must be permitted. For directions on how to do this with the Pi Appliance see Managing the Firewall.

USB udev

A udev rule is needed to allow Asterisk running as non-root access to the USB system. ASL3 systems installed from debs, apt install or images will already have this rule in place.

/etc/udev/rules.d/90-asl3.rules
SUBSYSTEM=="usb", ATTRS{idVendor}=="0d8c", GROUP="plugdev", TAG+="uaccess"

The UDev subsystem must be reloaded and then the USB device re-inserted into the port. UDev is reloaded with the command

udevadm control --reload

Alternatively, reboot the system.